Patents by Inventor Takumi Dejima

Takumi Dejima has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10568490
    Abstract: Provided is a surgical apparatus for an endoscope with which an operator can change, as desired, the size of an image of a site to be observed that appears in an endoscopic image obtained by an endoscope or the size of the range of the site to be observed. An image processing unit (zooming means) of a processor device changes a zoom magnification factor of an endoscopic image from an endoscope through electronic zooming on the basis of the operation of a foot switch. In the non-sensing region of the slider, the activation and deactivation of the zooming operation by the foot switch are switched according to a relative position of a distal end of the endoscope with respect to a distal end of the treatment tool.
    Type: Grant
    Filed: March 28, 2017
    Date of Patent: February 25, 2020
    Assignee: FUJIFILM Corporation
    Inventor: Takumi Dejima
  • Patent number: 10542869
    Abstract: Provided are an endoscopic surgical device and a guide device that can satisfy the function of interlocking two medical instruments with each other. An overtube, which is punctured into a body wall and guides an endoscope and a treatment tool into a body cavity, includes an interlocking member that interlocks the forward and backward movements of the endoscope and the treatment tool with each other. The interlocking member is constituted of a first sleeve coupled to the endoscope, a second sleeve coupled to the treatment tool, and a corded flexible coupling member that couples the first sleeve and the second sleeve together. Accordingly, when the coupling member is in a relaxed state, the endoscope and the treatment tool independently move forward and backward, and when the coupling member is in a tensioned state, the endoscope and the treatment tool move forward and backward in an interlocking manner.
    Type: Grant
    Filed: January 30, 2018
    Date of Patent: January 28, 2020
    Assignee: FUJIFILM Corporation
    Inventors: Kimiaki Nakada, Takumi Dejima, Masayuki Iwasaka
  • Patent number: 10537359
    Abstract: An overtube includes a slider within an overtube body, which guides an endoscope and a treatment tool into a body cavity. An endoscope-coupled part and a treatment tool-coupled part are provided in the slider, and the slider has a dead zone where the forward and backward movement of either the endoscope or the treatment tool does not interlock with the movement of the other and a sensing zone where the forward and backward movement of either the endoscope or the treatment tool interlocks with the movement of the other. A fluid-supplying connector that is provided on a base end surface of the overtube body, and has an axial direction that is made parallel to a longitudinal axis of the overtube body, and is detachably connected to an air supply tube for sending fluid into the body cavity through an internal space of the overtube body.
    Type: Grant
    Filed: September 4, 2018
    Date of Patent: January 21, 2020
    Assignee: FUJIFILM Corporation
    Inventor: Takumi Dejima
  • Patent number: 10492665
    Abstract: Provided is a surgical apparatus for an endoscope that can appropriately and easily perform mounting work of an endoscope onto an outer tube. An outer tube, which passes through a body wall, is inserted into a body cavity, and guides an endoscope and a treatment tool into the body cavity, includes a slider that is an interlocking member that moves the endoscope and the treatment tool forward and backward in an interlocking manner. At the time of mounting of an endoscope in which an endoscope insertion part is coupled to a slider body of the slider, the endoscope insertion part is inserted to a position where a larger-diameter part provided in the endoscope insertion part abuts against a base end surface of an outer tube. Accordingly, the slider body can be coupled to a predetermined suitable position of the endoscope insertion part.
    Type: Grant
    Filed: March 28, 2017
    Date of Patent: December 3, 2019
    Assignee: FUJIFILM Corporation
    Inventor: Takumi Dejima
  • Patent number: 10485407
    Abstract: A surgical device, an outer tube, an endoscope, and a treatment tool that have a compact configuration and achieve high durability are provided. The outer tube includes a slider in an outer tube body. When the endoscope and the treatment tool are inserted into the outer tube, and are held by an endoscope holding part and a treatment tool holding part each being provided in the slider, and are combined into a single unit. Consequently, when the treatment tool is moved in the axial direction, the endoscope is moved in the axial direction in interlock with the movement. Because the outer tube is configured such that the endoscope exit port has an inner diameter that is smaller than the inner diameter of the elastic member provided to hold the endoscope at the endoscope holding part, the strength of the endoscope can be secured while preventing interference with the treatment tool.
    Type: Grant
    Filed: September 29, 2015
    Date of Patent: November 26, 2019
    Assignee: FUJIFILM Corporation
    Inventor: Takumi Dejima
  • Patent number: 10456015
    Abstract: Provided is an endoscopic surgical device and an overtube with which a surgeon can easily obtain a desired image and operability is high. The overtube includes a slider inside the overtube body that guides an endoscope and a treatment tool into a body cavity, the first valve member provided in the endoscope insertion passage, and the second valve member provided in the treatment tool insertion passage. F1>F3 and F2>F3 are satisfied when a fixing force for fixing the slider to the endoscope is defined as F1, a fixing force for fixing the slider to the treatment tool is defined as F2, and a frictional force that receives from the first valve member when the endoscope moves forward and backward is defined as F3.
    Type: Grant
    Filed: December 26, 2017
    Date of Patent: October 29, 2019
    Assignee: FUJIFILM Corporation
    Inventors: Takumi Dejima, Shinichi Yamakawa
  • Patent number: 10456165
    Abstract: An endoscopic surgical device and an overtube that allows the state of a distal end of a treatment tool to be easily checked while reducing the diameter of the overtube and can improve surgical efficiency. An endoscope insertion part of an endoscope and a treatment tool insertion part of a treatment tool are insertable through an overtube inserted into a body wall, and a slider is provided for moving the endoscope insertion part and the treatment tool insertion part forward and backward in an interlocking manner. A guide part that guides the endoscope insertion part in a direction away from a distal end of the treatment tool insertion part is provided in the vicinity of an endoscope delivery port in a distal end cap at the distal end of the overtube, and the endoscope insertion part is delivered in an oblique direction from the endoscope delivery port.
    Type: Grant
    Filed: September 26, 2016
    Date of Patent: October 29, 2019
    Assignee: FUJIFILM Corporation
    Inventor: Takumi Dejima
  • Patent number: 10456024
    Abstract: A distal end of an endoscope insertion passage of an overtube is provided with a fluid supply and discharge port. When an observation window of the endoscope insertion part inserted through the endoscope insertion passage is cleaned, an operator can set a distal end surface at a predetermined positioning position using a positioning mechanism, without extracting the endoscope insertion part from the endoscope insertion passage. A concave cleaning storage part that communicates with the fluid supply and discharge port is formed inside the endoscope insertion passage on the distal end side. Cleaning water is supplied from the fluid supply and discharge port to remove foreign matter from the observation window, and stored in the cleaning storage part, and then, the cleaning water stored in the cleaning storage part is suctioned from the fluid supply and discharge port.
    Type: Grant
    Filed: September 26, 2016
    Date of Patent: October 29, 2019
    Assignee: FUJIFILM Corporation
    Inventors: Takumi Dejima, Toshiharu Kuwae
  • Publication number: 20190320883
    Abstract: An object of the present invention is to provide an endoscopic surgery device and an outer tube, capable of easily obtaining an image desired by an operator to facilitate treatment as well as of performing minimally invasive surgery. In the endoscopic surgery device and the outer tube, an endoscope and a treatment tool are inserted into a body cavity through an outer tube. The outer tube is provided with a built-in slider. The slider is provided so as to be axially movable in the outer tube body. The endoscope and the treatment tool, inserted into the outer tube, are held by the slider. Moving the treatment tool allows endoscope to be moved in conjunction with the movement of the treatment tool.
    Type: Application
    Filed: June 28, 2019
    Publication date: October 24, 2019
    Applicant: FUJIFILM Corporation
    Inventors: Takumi DEJIMA, Nobuyuki TORISAWA
  • Patent number: 10448810
    Abstract: Provided are a surgical apparatus for an endoscope and an outer tube that ease limitation of the types of available medical instruments to improve convenience and improve operability. An outer tube, which passes through a body wall, is inserted into a body cavity, and guides an endoscope and a treatment tool into the body cavity, includes therein a slider that is an interlocking member that moves the endoscope and the treatment tool forward and backward in an interlocking manner. The slider is provided with a cylindrical pressure-contact member that is brought into pressure-contact with and coupled to an outer peripheral surface of the treatment tool. The pressure-contact member is formed of compressible foamed rubber having pores, and an oil component is held in the pores of the foamed rubber.
    Type: Grant
    Filed: March 28, 2017
    Date of Patent: October 22, 2019
    Assignee: FUJIFILM Corporation
    Inventor: Takumi Dejima
  • Patent number: 10433712
    Abstract: An outer port sheathing an overtube, includes: a first cylindrical member having a distal end opening from which the overtube is delivered; a second cylindrical member that is rotatably connected to the first cylindrical member and has a base end opening into which the overtube is introduced; rotation restriction means that restricts rotation of the overtube with respect to the second cylindrical member; a spring member that is deformable between a rotation locked state where rotation of the second cylindrical member with respect to the first cylindrical member is restricted by engagement of the spring member with the first cylindrical member, and a rotation unlocked state where the engagement is released and the rotation is allowed; and a rotation operating member that is rotatable in an axial direction of the second cylindrical member and deforms the spring member between the rotation locked state and the rotation unlocked state.
    Type: Grant
    Filed: September 26, 2016
    Date of Patent: October 8, 2019
    Assignee: FUJIFILM Corporation
    Inventor: Takumi Dejima
  • Patent number: 10434259
    Abstract: A syringe device includes a syringe body; a first space defined inside the syringe body; a plunger body being slidable inside the syringe body and varies the volume of the first space; a second space defined inside the plunger body; a plunger rod being slidable inside the plunger body and varies the volume of the second space; a coil spring that urges the plunger rod in a direction expanding the volume of the second space; a first communication passage and a second communication passage that communicate the first space with the second space; and a check valve member that forms an orifice that restricts the flow of a fluid between the first space and the second space in the first communication passage, and a check valve that allows only the flow of the fluid from the second space to the first space in the second communication passage.
    Type: Grant
    Filed: September 26, 2016
    Date of Patent: October 8, 2019
    Assignee: FUJIFILM Corporation
    Inventors: Takumi Dejima, Toshiharu Kuwae
  • Patent number: 10398291
    Abstract: An overtube to be inserted into a body wall is provided with an endoscope insertion passage and a treatment tool insertion passage, the treatment tool insertion passage is provided parallel to a reference axis of the overtube, and the endoscope insertion passage is provided obliquely to the reference axis. A slider, which is engaged with the endoscope and the treatment tool inserted through the respective insertion passages and causes the endoscope and the treatment tool to interlock with each other and move forward and backward, is arranged inside the overtube so as to be movable in a forward-backward direction of the overtube. An endoscope engagement part engaged with the endoscope in the slider is movable in an upward-downward direction, and moves upward and downward along the position of the oblique endoscope insertion passage together with the movement of the slider in the forward-backward direction.
    Type: Grant
    Filed: September 26, 2016
    Date of Patent: September 3, 2019
    Assignee: FUJIFILM Corporation
    Inventor: Takumi Dejima
  • Patent number: 10376135
    Abstract: An object of the present invention is to provide an endoscopic surgery device and an outer tube, capable of easily obtaining an image desired by an operator to facilitate treatment as well as of performing minimally invasive surgery. In the endoscopic surgery device and the outer tube, an endoscope and a treatment tool are inserted into a body cavity through an outer tube. The outer tube is provided with a built-in slider. The slider is provided so as to be axially movable in the outer tube body. The endoscope and the treatment tool, inserted into the outer tube, are held by the slider. Moving the treatment tool allows endoscope to be moved in conjunction with the movement of the treatment tool.
    Type: Grant
    Filed: November 21, 2014
    Date of Patent: August 13, 2019
    Assignee: FUJIFILM Corporation
    Inventors: Takumi Dejima, Nobuyuki Torisawa
  • Patent number: 10368723
    Abstract: An endoscope and a treatment tool which are inserted into an outer tube can move back and forth in interlock with each other, and an operation part of the treatment tool can be prevented from interfering with a proximal end of the endoscope when inserting the treatment tool into the outer tube. An endoscopic surgery device satisfies the following expressions: Lt?Ls<Lh, and Lh?Ls1+Ls+t, where Lt is a length of the outer tube, Ls is a length of a hard part of the insertion part of the endoscope, Lh is a length of a hard part of the insertion part of the treatment tool, Ls1 is a minimum projection length of a distal end of the insertion part of the treatment tool with respect to a distal end of the insertion part of the endoscope, and t is an allowance amount.
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: August 6, 2019
    Assignee: FUJIFILM Corporation
    Inventor: Takumi Dejima
  • Publication number: 20190200846
    Abstract: An insertion part of an endoscope and an insertion part of a treatment tool, which are inserted in an outer tube, can be synchronously moved in the axial direction, and, even when the insertion part of the treatment tool is slightly moved in the axial direction, an excellent endoscopic image without shake is obtained. When a treatment tool of an endoscopic surgery device moves by a displacement amount over an allowance amount, an endoscope moves in interlock with the movement of the treatment tool. Moreover, the treatment tool 50 moves in the axial direction with the allowance amount t with respect to the endoscope 10. Therefore, when the treatment tool is moved by a displacement amount of allowance amount or less, the endoscope does not move. By providing such allowance amount, slight movement of the treatment tool is not transmitted to the endoscope.
    Type: Application
    Filed: March 8, 2019
    Publication date: July 4, 2019
    Applicant: FUJIFILM Corporation
    Inventor: Takumi DEJIMA
  • Publication number: 20190192187
    Abstract: Provided is an endoscopic surgical device and an overtube with which a surgeon can easily obtain a desired image and operability is high. The overtube includes a slider within an overtube body, which guides an endoscope and a treatment tool into a body cavity. An endoscope-coupled part and a treatment tool-coupled part are provided inside the slider, and the slider has a dead zone where the forward and backward movement of either the endoscope or the treatment tool does not interlock with the movement of the other and a sensing zone where the forward and backward movement of either the endoscope or the treatment tool interlocks with the movement of the other. F1>F2 is satisfied when a fixing force for fixing the endoscope-coupled part to the endoscope tool is defined as F1 and a fixing force for fixing the treatment tool-coupled part to the treatment tool is defined as F2.
    Type: Application
    Filed: March 4, 2019
    Publication date: June 27, 2019
    Applicant: FUJIFILM Corporation
    Inventor: Takumi DEJIMA
  • Patent number: 10292576
    Abstract: A surgical device, an outer tube, an endoscope, and a treatment tool that have a simple configuration and excellent operability are provided. The outer tube includes a slider in an outer tube body. When the endoscope and the treatment tool are inserted into the outer tube, the endoscope and treatment tool are held by an endoscope holding part and a treatment tool holding part each being provided in the slider so as to be integrated. When the treatment tool is moved in the axial direction, the endoscope is moved in the axial direction in interlock with the movement. In the outer tube, the opening type hermetic valve part for the endoscope in a valve member has the inner diameter larger than the inner diameter of the elastic member for causing the endoscope holding part to hold the endoscope.
    Type: Grant
    Filed: November 23, 2017
    Date of Patent: May 21, 2019
    Assignee: FUJIFILM Corporation
    Inventors: Takumi Dejima, Masayuki Iwasaka
  • Patent number: 10264950
    Abstract: An insertion part of an endoscope and an insertion part of a treatment tool, which are inserted in an outer tube, can be synchronously moved in the axial direction, and, even when the insertion part of the treatment tool is slightly moved in the axial direction, an excellent endoscopic image without shake is obtained. When a treatment tool of an endoscopic surgery device moves by a displacement amount over an allowance amount, an endoscope moves in interlock with the movement of the treatment tool. Moreover, the treatment tool 50 moves in the axial direction with the allowance amount t with respect to the endoscope 10. Therefore, when the treatment tool is moved by a displacement amount of allowance amount or less, the endoscope does not move. By providing such allowance amount, slight movement of the treatment tool is not transmitted to the endoscope.
    Type: Grant
    Filed: September 29, 2015
    Date of Patent: April 23, 2019
    Assignee: FUJIFILM Corporation
    Inventor: Takumi Dejima
  • Patent number: D855803
    Type: Grant
    Filed: January 28, 2016
    Date of Patent: August 6, 2019
    Assignee: FUJIFILM Corporation
    Inventors: Takumi Dejima, Hideyuki Yamada